The study investigated why Bureau of Indian Affairs (BIA) teachers leave the Bureau schools on the Pine Ridge Oglala Sioux Reservation in South Dakota. The BIA Aberdeen Area Office was contacted to obtain information on teacher turnover. Records were examined to learn the number of teachers teaching on Pine Ridge Reservation during 1965-67 who are no longer employed there. Questionnaires filled out by the former teachers (51) revealed that most (57%) resigned because of the administration, isolation, or for personal reasons. The majority of the teachers who left the profession were women, mainly for personal reasons, retirement, health, or marriage. Administration was the reason men listed most often for leaving. The principals of the schools played a decisive part in their satisfaction or dissatisfaction with teaching experiences. Records indicated that approximately 41% of the new teachers, if they complete their first year, do not return for a second year. The teachers ranged in age from 21-75 with an average age of 45. This study showed that more than half of the vacancies were created by the teachers under 30 or over 50. One recommendation for teacher retention was that a realistic picture of living in a small isolated Indian community be presented. (FF)